Conferencing telephone unit



FIG. 1 is a perspective view of the conferencing telephone unit;

FIG. 2 is a top plan view of the unit illustrated in FIG. 1;

FIG. 3 is a bottom plan view of the unit illustrated in FIG. 1; and

FIG. 4 is a side view of the unit illustrated in FIG. 1. 

The ornamental design for a conferencing telephone unit, substantially as shown. 